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Updated: May 16, 2025

The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Regulating the Electronic Metal-Support Interaction of Single-Atom Ruthenium Catalysts for Boosting Chlorobenzene
Xiaoxiao Duan1, Ben Niu1, Yiwen Wang1
1National Engineering Laboratory for VOCs Pollution Control Material & Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China.
Abstract:
Developing highly active single-atom catalysts (SACs) with excellent chlorine resistance for efficient oxidation of harmful chlorinated volatile organic compounds (CVOCs) is a great challenge. Tuning the electronic metal-support interaction (EMSI) is viable for promoting catalytic performances of SACs. Herein, an effective strategy of modulating the EMSI in Ru1/CeO2 SACs by thermal treatment control is proposed, which distinctly enhances the activities of the catalyst for chlorobenzene (CB) oxidation and chlorine conversion, accomplishing total CB degradation at nearly 260 °C. Detailed characterization and theoretical calculations reveal that the EMSI induces electron transfer from Ru to CeO2, optimizing the coordination and electronic structure of single-atom Ru and accordingly facilitating the adsorption and activation of CB. Moreover, the surface lattice oxygen (Olatt) at the Ru-O-Ce interface is demonstrated as the critical reactive oxygen species, the mobility and reactivity of which are also prompted by the EMSI, leading to the boosted conversion of reaction intermediates. This work sheds light on the effect of EMSI regulation on CVOC catalytic oxidation and provides guidance on fabricating high-efficiency SACs for environmental catalysis.
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